for proving the products work. >>> fleet week arrives in dramatic fashion. [ crowd noise ] >> a navy hover craft came ashore at ocean beach this morning. the 60's-ton l-cat can be used to deliver heavy equipment in a disaster. it plied a role in the days after hurricane katrina. events that will create grik this weekend. the america' >>> fleet week is just one of the events that will create gridlock this weekend. the america's cup series continues in san francisco bay, and the hardly strictly bluesgrass festival starts friday. >> paul's got the forecast for those weekend events coming up in two minutes. ,,,, >>> did you feel the change ten? it was 5 or 10 degrees cooler in some points. but in downtown san francisco, what a change! we can see the moon right now, beautiful shot out there over the bay bridge. current temperatures, getting cooler. concord, 61, livermore, 65. downtown san francisco, 59, and san jose, 64 degrees. 4:00 yesterday versus 4:00 in the afternoon today. that was a 30-degree difference in downtown san francisco! down to 64. oakland dropped 24 degrees because everybody w